M. Schneider, A. Iseke, and K. Pull, “The gender pay gap in European executive boards: the role of executives’ pathway into the board,” The International Journal of Human Resource Management, pp. 1–23, 2019.

J. Schumacher and S. Rezat, “A Hypothetical Learning Trajectory for the Learning of the Rules for Manipulating Integers,” in Proceedings of the Eleventh Congress of the European Society for Research in Mathematics Education (CERME11, February 6 – 10, 2019), Utrecht.